Add option to enable/disable WS_CLIPCHILDREN window style (#3212)

src/platform_impl/windows/mod.rs

@@ -37,6 +37,7 @@ pub struct PlatformSpecificWindowBuilderAttributes {
     pub skip_taskbar: bool,
     pub class_name: String,
     pub decoration_shadow: bool,
+    pub clip_children: bool,
     pub border_color: Option<Color>,
     pub title_background_color: Option<Color>,
     pub title_text_color: Option<Color>,
@@ -54,6 +55,7 @@ impl Default for PlatformSpecificWindowBuilderAttributes {
             skip_taskbar: false,
             class_name: "Window Class".to_string(),
             decoration_shadow: false,
+            clip_children: true,
             border_color: None,
             title_background_color: None,
             title_text_color: None,